Cat Blocked Tear Duct [cracked] Review

The feline nasolacrimal system begins at the superior and inferior puncta, small openings located on the upper and lower eyelids at the medial canthus (inner corner of the eye). These puncta lead into the canaliculi, which converge to form the lacrimal sac. From the lacrimal sac, the nasolacrimal duct descends through the bony lacrimal canal and empties into the nasal vestibule. Unlike in dogs, the feline duct typically has a narrower lumen and a more tortuous course, making it potentially more susceptible to complete obstruction. The distal opening (nasal punctum) is located approximately 2–5 mm inside the nostril on the floor of the nasal vestibule.

Epiphora is a common presenting complaint in feline veterinary practice. While differential diagnoses include excessive tear production (e.g., reflex tearing due to corneal ulcers or uveitis) or poor eyelid conformation (e.g., entropion), a significant proportion of cases are attributed to obstruction of the nasolacrimal drainage system. The condition can be congenital, often seen in brachycephalic breeds, or acquired secondary to trauma, inflammation, or neoplasia. Chronic obstruction can lead to mucoid discharge, bacterial dacryocystitis (inflammation of the lacrimal sac), and discomfort. This paper aims to provide a comprehensive overview of NLDO in cats, equipping clinicians with the knowledge to diagnose and manage this condition effectively. cat blocked tear duct

Congenital NLDO is most frequently observed in brachycephalic breeds such as Persians, Himalayans, and Exotic Shorthairs. Due to their flattened facial conformation, the nasolacrimal duct may be compressed, narrowed, or fail to develop a patent distal opening (functional imperforate punctum). In some kittens, the puncta may be anatomically absent (atresia). The feline nasolacrimal system begins at the superior

A 4-year-old Persian cat presented with chronic left-sided brownish ocular discharge. Schirmer tear test and corneal staining were normal. Fluorescein dye failed to reach the left nostril after 15 minutes. Nasolacrimal flushing with saline encountered mild resistance, followed by reflux of mucoid debris. No foreign body or mass was seen on skull CT. The cat was diagnosed with chronic idiopathic partial obstruction. Treatment consisted of weekly ductal flushing under sedation and topical antibiotic-steroid ointment for 4 weeks, resulting in decreased discharge. The owner was advised of possible recurrence. Unlike in dogs, the feline duct typically has

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